"sudo apt-get dist-upgrade" updates Linux distributions, which is how I'm assuming the StellarMate OS upgrades are packaged. If you use the sudo command without the -u option, you'll run the command as root. CGAC2022 Day 10: Help Santa sort presents! But I can write it in windows. It is possible to disable the need for a password when running sudo commands. From man mount. you can only mount devices that you can already read). I am aware that one can be specifically authorized on a mount-by-mount basis. If not, then you need sudo so the process becomes root before running the command. If this is not possible in general, it will be enough for me to be able to mount only a certain shared folder to a certain place. With sudo, we'll be able to execute administrative tasks without switching users. Answer (1 of 5): du recursively summarises the disk usage of directories and files, by default the current directory. 5. To unmount a mounted file system, use the umount command. truecrypt is hashed (/usr/bin/truecrypt), sudo truecrypt -d ; # to dismount all volumes. Each file in Linux has a UID and EUID associated with the file. /dev/sda1, /dev/sda2, etc.) sudo prividleges apply recursive.. eg if user run script as sudo ./script.sh inside script it will have sudo priviledge. Linux 101: What is the mount command, and how do you use it? If you updated your users' groups recently, try logging out then back in. permissions mount cifs Share Improve this question Follow asked Dec 11, 2018 at 17:26 It has been renamed to reflect that new functionality. This is a crucial feature, otherwise, you wouldnt be able to either expand your storage or attach external data drives. Filesystem drivers have often not been tested as thoroughly with malformed filesystem. So tl;dr I switched from Ubuntu to Arch and it's been going great, but the odd thing is when I mount my Windows Hard drives it asks for sudo permission before allowing me to mount them. If the administration of the system is not fair, that's politics. In order to maintain a consistent, predictable and supportable computing environment it is essential to establish a pre-defined set of software applications for use on workstations, laptops, mobile devices and servers. Where does the idea of selling dragon parts come from? Some issue "chromeos_pstore" is shown (and slow down) while booting Press J to jump to the feed. It is possible there was a regress. Download Complete Linux Commands Cheat Sheet The jazz disk is used daily, both at home and at work on my Win 98 Server. suid binaries could be added to a device, mounted on your box and used to root a box, which is why by default. UID is the User ID or in other words the owner of the file. By writing your password as shell command, it becomes accessible through .bash_history file and by running history shell command. Don't forget to replace /path/to/image. Many of the driver updates and other Linux things happen here. Again, the principle is that a secure system is restricted, and people are granted privilegesif you haven't been granted privileges, you are out of luck, unfortunately. Connect and share knowledge within a single location that is structured and easy to search. Your argument is valid if 'you' are the single user; remember that Linux (and Unix) are multi-user systems, where users are not necessarily trusted. 3. Privileges are one mechanism by way of which this is accomplished. It seems like the decision as to whether to allow a user to mount something should be based on their access rights to the source volume/network share and to the mount point. By default when you enter a sudo command, you need to re-enter your password which can be a pain, especially if you've set your password to a complex pattern or disabled password login and only use SSH keys. other commands (cd, cp) do not require sudo privelages but mount option requries sudo permission. "sudo apt-get upgrade" updates any packages that need updating. Do non-Segwit nodes reject Segwit transactions with invalid signature? Run the following command: sudo crontab -e. This opens up root 's crontab. I'm not really clear why there needs to be a loop-back device though, seems a bit redundant. How long does it take to fill up the tank? I want to write a script that would do: and some other non-sudo commands. Most systems probably would not want to have the whole GNOME just for some remote mounting, then you can use lufs, sshfs or ftpfs. The general working of sudo is as simple as setuid. Japanese girlfriend visiting me in Canada - questions at border control? sudo options are sudo's alone and don't matter when you don't use it. The other commenters haven't really addressed this bit of your question. I'm wondering why a user can't mount something that they otherwise have access to. Acecssing NFS share without root privileges, Counterexamples to differentiation under integral sign, revisited, i2c_arm bus initialization and device-tree overlay. Is it possible to mount arbitrary mount points that one has normal access to? From the hottest programming languages to commentary on the Linux OS, get the developer and open source news and tips you need to know. How do I schedule an app to open every day at 8am. Maybe the timeout resets if you rerun sudo within those 5 minutes? When would I give a checkpoint to my D&D party that they can return to if they die? For this run following command: sudo usermod -aG docker $USER Now, have the user logout then login again. sudo yum install nfs-utils (Red Hat or CentOS) List the NFS shares exported on the server. For that, youll need to make use of the mount command. The sudo command allows trusted users to run programs as another user, by default the root user. Would it be possible, given current technology, ten years, and an infinite amount of money, to construct a 7,000 foot (2200 meter) aircraft carrier? How can I do this without a sudo option and without entering any passwords when the script is running. Why would Henry want to close the breach? Is it correct to say "The glue on the back of the sticker is dying down so I can not stick the sticker to the wall"? Known limitations. So, I have to keep it in vfat format, which is fine because Linux rocks and will read it no problem. In turn this would likely setup a precedent where they would have to also do such for everyone else that asked for such, which I can understand would be untenable. Alternatively, a user could mount his own filesystem on top of /etc, containing his/her own copy of /etc/shadow or /etc/sudoers, then obtain root with either su or sudo. I've mounted a share using standard nomenclature for the NFS mount command with the following command line: Mounting a filesystem changes the filesystem topology for all users on the system. Volume "/home/woodnt/.vol/xj9" has been dismounted. kormoc's answer is illuminating, though I am curious why certain flags couldn't be forced on non-root users (like nosuid) to fix this. AVAILABLE DISK SELECTIONS: To manually mount a USB device, perform the following steps: Create the mount point: sudo mkdir -p /media/usb Assuming that the USB drive uses the /dev/sdd1 device you can mount it to /media/usb directory by typing: sudo mount /dev/sdd1 /media/usb To find the device and filesystem type, you can use any of the following commands: Share Improve this answer edited Dec 20, 2016 at 21:32 Edited my /etc/fstab and put the filesystem to use the newest ntfs3 driver and now it mounts for unprivileged users :p. If you add into /etc/fstab an entry for the mount with the "noauto,user" options, then any normal user is allowed to execute that mount. So it made sense to restrict mounting to people who had legitimate physical access, and they would likely have access to the root account. Linux is a registered trademark of Linus Torvalds. Thanks in advance, So some restrictions would have to be added to prevent suid from being a problem as well as potentially some other issues. Did neanderthals need vitamin C from the diet? %admin ALL=NOPASSWD: /usr/bin/mount Mount the cluster via NFS. Because mount is primarily/originally intended for local filesystem, which almost always involves a hardware. Namespaces are more limited than that. And then add a line like this: user_name ALL= (ALL) NOPASSWD:/usr/bin/apt update, /usr/bin/apt upgrade. $ sudo mount --bind Dir1 Dir2 Is it correct to say "The glue on the back of the sticker is dying down so I can not stick the sticker to the wall"? It's not your syntax. As a general rule, anything that significantly affects all users on a Linux system cannot be done (at least by default) by an unprivileged user. : sudo is an efficient way to access the root privileges and execute the command as the root user. E.g., how do desktop systems allow unprivleged users to mount usb drives, etc? It will prompt for the root password and, if authenticated successfully, run the command as root : > id -un 1 tux > sudo id -un root's password: 2 root > id -un tux 3 > sudo id -un 4 root. For example: showmount -e usa-node01. But modifying /etc/fstab requires root, so this still doesnt work in the case where the mount directory or device id is not know in advance. How to reload .bashrc settings without logging out and back in again? mnt_for_70 is a mount point I created on {IP address2} From a security point of view, there are three major problems with allowing arbitrary users to mount arbitrary block devices or filesystem images at arbitrary locations. Why is Singapore currently considered to be a dictatorial regime and a multi-party democracy by different publications? Ready to optimize your JavaScript with Rust? Therefore non-root users can't mess with /dev/sda1 and clearly mount shouldn't allow them to mount it. How do I change permissions without sudo? $ truecrypt -t -v -d The sudo command runs the command that follows it as the root user. What does sudo do under the hood? Mount options for coherent Yes, by default, sudo won't ask for password for 15 minutes after the user has entered it once. Share But its not exactly that simple. So the question to ask is this: is the shell at hand being run by the root user already? Mount the ISO file to the mount point by typing the following command: sudo mount /path/to/image.iso /media/iso -o loop. Why does my stock Samsung Galaxy phone/tablet lack some features compared to other Samsung Galaxy models? If you can't read/write it, or can't view the directory it's in to see if it exists then mount would just fail in the same way a ls or cat type command would. Set up a mount point for an NFS share. The message "mount: only root can do that" comes from the mount command itself: it allows non-root users to only mount and unmount those filesystems that have the special mount option "user" in the /etc/fstab file. Unmounting the ISO Image. if he did have sudo access, how to remove ? The mount program does not read the /etc/fstab file if both device (or LABEL / UUID) and dir are specified. On a system without an automounting solution, which I don't usually like because they involve daemons and message subsystems and whatnot, mounting an external drive, such as a USB key, can be a nuisance.Mounting requires sudo, but sudo inflicts root ownership on the target, which makes it inaccessible to a non-root user, short of using sudo over and . Of course if you have no root rights, it is ABSOLUTELY IMPOSSIBLE to mount a filesystem (if it is not explicit allowed in /etc/fstab), else it would a BIG security breach. i am scurrying to finish reading the final chapter before i get down into the review. Why is the federal judiciary of the United States divided into circuits? Or if i double click test.sh file and select run then nothing happens. Asking for help, clarification, or responding to other answers. At this point, everything housed in your external drive will appear in /data. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content, Defining a variable with or without export. Runtime.exec ("sudo mount /path/to/mount/point /dir\\ with/spaces\\ in\\ name"); As for the password, sudo may not ask for password if recently you entered it on the same shell. This is not a security breach at all when the only users of the system are trusted to mount devices, but not to do other things. however, i came across something in chapter 8 - "mounting file systems" that has me really confused. Mount does exactly what you think it does, it mounts an external drive to your internal filesystem. @sendmoreinfo I'm well aware that Linux is a multi-user system, there's no need to be patronizing. %admin ALL=NOPASSWD: /usr/bin/umount, %admin ALL=(ALL) NOPASSWD: /usr/bin/mount Allowing a user to perform mount calls would probably be rather tricky regarding security. How to mount a host directory in a Docker container, SSH sudo inside script different behaviour, Received a 'behavior reminder' from manager. Thanks for contributing an answer to Stack Overflow! Why is the eastern United States green if the wind moves from west to east? If you are seeing Invalid argument on a ls after a successful mount, that usually indicates a problem/limitation (from WSL's narrow standpoint) with the filesystem driver on the Windows side.. To clarify, if I have an image file that's say ext2 I could write an application that allows me to read/write from/to said image (not as part of the OS's filesystem of course). You then need to find out where the drive is located, which can be done with the command lsblk. Any others utils? You could, however, create a new directory, say data with the command sudo mkdir /data. If that is the case, then this makes a little more sense. The name means 'super user do' and will perform the following command with root privileges after verifying the user running sudo has the permission to do so. If you're not using sudo, its configuration isn't relevant. sudo mount -t cifs -o username=USERNAME,password=PASSWD Is it have some safe way (without permanent sudo and other). Or, $ udisksctl mount --block-device /dev/sdc1. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? Why do I need to sudo mount -a my external drive when it's already in fstab? $ type truecrypt Now you could possibly envisage some ways in which this change was a "safe" change. But how do you mount these removable storage devices without root or sudo using a graphical file manager (like Nautilus)? Once youve done that, you have a mount point that can house the external drive. Access Denied by Server. Something can be done or not a fit? In 16.10 you don't need sudo for either command. SAP developers are currently in high demand. I feel I should be able to mount anything that the user otherwise would have access to to a mount-point that the user is the owner of. To add a user and grant full sudo privileges, add the following line: [username] ALL= (ALL:ALL) ALL. TechRepublic Premium content helps you solve your toughest IT issues and jump-start your career or next project. However, there are still other complications with this. 2. If the file isn't on the FSTAB, it will not mount without root. Replace /dev/sdc1 with your device name. Mathematica cannot find square roots of some matrices? Unix sudo may seem more annoying but it's more reliable - Sergiy Kolodyazhnyy Oct 6, 2016 at 2:38 Volume "/home/woodnt/.vol/i5yq" has been dismounted. As far as not using sudo, I'm confused then. SEE: How-to guide for Linux administrators (free PDF) (TechRepublic). This can be used to allow users to create or delete their own time stamps via "sudo -v" and "sudo -k" respectively. If you want to allow to mount given path without superuser permissions (for regular user) edit its /etc/fstab entry as shown here. Hence the query as to why Linux doesn't allow you to mount arbitrary things that would be safe (in some restricted fashion). As for reboot command itself, it might be separated from systemd, hence requires sudo. Gilles addresses some of the security problems associated with mounting filesystems. 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Find centralized, trusted content and collaborate around the technologies you use most. If it isn't true, you should pester those responsible. That's a good point about the limit of loop-back device nodes. This behavior has nothing to do with the number of sudo-powered commands you run, but instead depends on time. Use the visudo command to edit the configuration file: sudo visudo. FUSE drivers run as the mounting user so there is no risk of privilege escalation by exploiting a bug in kernel code. He's covered a variety of topics for over twenty years and is an avid promoter of open source. Ordinary users can create a namespace, and within that namespace, become root and do fun stuff like mount file-systems. Options. The system allows the super user to restrict your activities, either explicitly, or by omission ("We don't provide FUSE", etc). {0} ok boot -s Moreover, mounting a filesystem is an inherently dangerous operation. SEE: 5 Linux server distributions you should be using (TechRepublic Premium). In this tutorial, we'll show you all the sudo command basics and how to edit the sudoers file. Next year, cybercriminals will be as busy as ever. Check out our top picks for 2022 and read our in-depth analysis. sudo mount -t vfat /dev/sda7 /media/Ddrive It also offers guidance for devices not connected to a network. So, I know I've said this a bunch of times, but the philosophy is that "mounting arbitrary things". About mounting and umounting inherited mounts inside a newly-created mount namespace. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Connect and share knowledge within a single location that is structured and easy to search. But it seems if the mount point and volume are both owned by the user that the user should be able to mount with no specific authorization. One such task is mounting file systems (such as external drives) to the filesystem. As long as you have the privilege for the mount directory and to whatever resources that are needed to construct the filesystem, you can create FUSE mount. Your note regarding interrupts on devices is totally irrelevant; the only significant interrupt that is happening on for remote filesystem comes from the network card, which are handled wholly by the kernel. This tells the EFS mount helper to pass your credentials to the EFS mount target. other commands (cd, cp) do not require sudo privelages but mount option requries sudo permission. I need help on removing sudo access on one id but first of all, can i confirm that the user below is having sudo access ? If you just want to copy a file from 'here' to 'there', then loop at. I don't understand why this is though. If I can read/write a mount point then I should be able to everything mount can with the exception of actually mounting it to a directory. If you can read/write the file normally then you should be able to mount it (is my argument). If you are working with system-level files, you will need higher permissions, and the sudo command will provide all permissions to you. Do so by providing the file system's mount point. This issue can occur if your NFS client does not have permission to mount the file system. Could anyone please assist me with the what could be the scenarios to test the file system mount/umount performance check in HPUX. :-) However, I can't just stick the disk in the drive and open up the jazz folder in my mnt ---------- Post updated at 06:15 PM ---------- Previous update was at 05:42 PM ----------, ---------- Post updated at 11:29 PM ---------- Previous update was at 10:48 PM ----------, admin, beginners, mount, solaris, solaris 8, text, add, ant, beginners, command, command line, dev, directory, disk, ed, entry, file, filesystem, format, fs, fstab, home, icon, line, linux, make, man, man pages, mount, open, option, password, problem, put, read, root, scrip, script, security, security risk, server, user, version, write, Test cases for file system mount/umount performance in HP. Making statements based on opinion; back them up with references or personal experience. The best answers are voted up and rise to the top, Not the answer you're looking for? Why does my stock Samsung Galaxy phone/tablet lack some features compared to other Samsung Galaxy models? Asking for help, clarification, or responding to other answers. I don't know when they changed that. Mount options for cifs Just like nfs or smbfs implementation expects a binary argument to the mount system call. Thanks for contributing an answer to Unix & Linux Stack Exchange! And then I added in /etc/rc.local: Code: Select all. The title says it all. How can i avoid typing password? 7. If youre working with a distribution of Linux that includes a desktop GUI, adding external drives is pretty simple. However, in Solaris 10 it does not seem to do the same. "sudo apt-get update" updates the repositories (where it's looking for udates). See Namespaces in operation, part 1: namespaces overview, section 4. I think you can do that if the mount point is in your /home folder, but I could be wrong. woodnt adm disk dialout cdrom audio video plugdev lpadmin admin sambashare vboxusers. In my specific case I am doing mount -t cifs, how does one go about making this mount not require require sudo? The mount helper defines a new network file system type, called efs, which is fully compatible with the standard mount command in Linux. It only takes a minute to sign up. sudo command in Linux stands for Super User DO. Is it safe to unplug it? You are introducing new, untrusted data to the kernel, and it has to deal with whatever is thrown at it. P.S. Desktop linux distributions use udisks to grant non-root users limited mounting priviliges. Logged in as normal user, you can run any command as root by adding sudo before it. Why is that? Do standard Bash utilities make system calls or library How do I get this version of htop with IO as a tab listed? Usually, to grant sudo access to a user you need to add the user to the sudo group defined in the sudoers file.On Debian, Ubuntu and their derivatives, members of the group sudo are granted . By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. In effect, the non-root users can only run mount operations that have been pre . You're actually running a command named 'sudo'. Here's a breakdown of the granted sudo privileges: To learn more, see our tips on writing great answers. Not the answer you're looking for? I know it's because mounting requires a block-wise file rather then a normal file. Why is apparent power not measured in watts? Of course, if we are talking about a server VM, then these tools might not be installed. But what if the device node is owned by the user. From the policy: PHYSICAL SECURITY GUIDELINES AND REQUIREMENTS The following guidelines should be followed in designing and enforcing access to IT assets. 10 More Discussions You Might Find Interesting, Hi Folks, How are setuid, suid, sudo, and su all related? You really should NEVER use such a line os.system ('echo %s|sudo -S %s' % (sudoPassword, command)), cause it brings a security hole. If the invoking user is already root, the -V option will print out a list of the defaults sudo was compiled with. 4. Why would Henry want to close the breach? However if the user owns /home/my_user/my_imagefile.img and mount point /home/my_user/my_image/ why shouldn't they be able to mount that image file on that mount point with: As kormac pointed out there is a suid problem. I'm not sure how "the data on filesystem they intend to mount" would compromise security. 36. Does fstab allow wildcards? However, because Linux does not allow such things I'm stuck with scp'ing files back and forth to stay under the 8GB limit. The setuid sets this EUID value. Or you may prefer to write expect script which will have password written and password will be entered when it prompts for it. If i double click the test.sh file and select run in terminal then the terminal prompts for password. 2, After I umounted the usb drive the led of it still on, but not blinking. Generally, this is an acceptable risk on a consumer device, but Linux is designed for server first. Then you can use non-root syntax like this to mount within your local home directory; sshfs -o ControlPath=none -o workaround=rename -o idmap=user \ -o nonempty -o reconnect -o . sudo du will do so with root privilege. Can a prospective pilot be negated their certification because of too big/small hands? # format Otherwise, anyone who can run any Docker commands at all, can run this one: docker run -v /etc:/host-etc busybox \ sh -c 'echo ALL ALL (ALL:ALL) NOPASSWD:ALL >> /host-etc/sudoers' That is, anyone who can run Docker commands is all but root already. A buggy filesystem driver could allow a user supplying a malformed filesystem to inject code into the kernel. I have a 1 GB jazz drive. The mount helper also supports mounting an Amazon EFS file system at instance boot time automatically by using entries in the /etc/fstab configuration file on EC2 Linux instances. The user could mount a filesystem with a suid root copy of bash running that instantly gives root (likely without any logging, beyond the fact that mount was run). Find the drive name associated with the disk and mount it with the command sudo mount NAME /data (Where NAME is the name associated with the drive, such as /dev/sdb). At what point in the prequels is it revealed that Palpatine is Darth Sidious? How can I move files to folder with the same name? Manually Mount. Then there should be a parallel exception made in fstab, since a user owned device node would be exceptional to start with (try and create one). Part 2: The sudo Command (this . The programs mount and umount maintain a list of currently mounted filesystems in the file /etc/mtab. Educate a rookie on Where To Keep Her Files. Method 2: Open terminal on your android phone (download here): Type this in the terminal : su. For example: mount /dev/ foo / dir. How do I run a command as a different user from a root cronjob? and how can I make it not require it? It allows you to execute a command as another user, including the superuser. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, What are you trying to do? Add user to its options, e.g. To use sudo, let's just type sudo and press enter. Jack Wallen introduces new Linux users to the mount command and how to use it to mount an external drive to the internal file system. But it's not exactly that simple. You can allow that user to mount without needing sudo power. For instance, perhaps mount could allow an unprivileged user to mount a filesystem if they were the owner of the filesystem entry being mounted over. It's a fairly friendly program. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How do you remount FS as RW? Sudo stands for "superuser do" and effectively gives a regular user (one that belongs to the admin group) access to administrator-like powers. I'm developing a Java application which executes commands in the shell using the java.lang.Runtime.exec api, which runs fine for commands ls, df, etc., but for commands mount and umount, i have problems as I need to be root to eecute these. How to completely uninstall sudo program? sudo mount -a Note: If a mount has the noauto option set, the sudo mount -a command will not mount it. Was the ZX Spectrum used for number crunching? Because it calls sudo itself. For practical purposes, it is possible nowadays to mount a filesystem without being root, through FUSE. Is truecrypt itself calling sudo to mount? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Here, we're going run the whoami command as the user mary. Here is what I did: Post these 15 minutes, you'll be prompted for password again. Sudo in general is necessary for security. Always pass password through stdin as it's more secure approach - thodnev Is it possible to mount a file with different ownership/permissions? which command you are going to use to call mount command in your program. Copy the command under using the EFS mount helper. Penrose diagram of hypothetical astrophysical white hole. thanks Try to run a command with sudo permission and see if it is working or not. 1. As you already know, you need to be a sudo user in order to display, mount and access removable media (such as external hard drives, USB drives, optical drives and cameras) from the command line. Not sure if it was just me or something she sent to the whole team. It seems like I should be able to mount for the purpose of simple read/write an image file/network share that I otherwise have access to onto a mount point that I own. It is also important to consider that the data in such filesystems can almost always be accessed without the need for mounting a device, either through file transfer or tools which extract from images without mounting, so a system which does not allow you to mount something does not represent an insurmountable problem with regard to accessing data that you have bizarrely placed in an image file, or (more understandably) want to get from a remote system. In GNOME, gvfs does not require root for mounting remote filesystem (ftp or ssh) and gnome-mount also does not need root for mounting external storage (usb drive, CD/DVD, etc). See, *nix does not sell high capacity magazines over the counter -- you need a permit. A program can tell the difference if necessary. The issue with regard to virtual and remote filesystems (or remote filesystems via virtual filesystems, a la FUSE) is less significant, but this does not solve the security question (although FUSE might, and it certainly would solve your problem). You can test it yourself by mounting an USB drive as normal user using udisksctl command like below: $ udisksctl mount -b /dev/sdc1. @hourly rm somefile. For example: sudo mkdir /mapr. 2. Perhaps one way to do this would be to make the OS treat all files as belonging to the user that did the mounting. The sudo command allows non root users to run other Linux commands that would normally require super user privileges, while the sudoers file instructs the system how to handle the sudo command. sudo (superuser do) is a great tool for restricting access to the root account (or other accounts). For example, if you want the apt update and apt upgrade to be run without entering the password for sudo in Ubuntu, here's what you need to do. How could my characters be tricked into thinking they are on Mars? Whether you are a Microsoft Excel beginner or an advanced user, you'll benefit from these step-by-step tutorials. -P. The -P ( preserve group vector) option causes sudo to preserve the invoking user's group vector unaltered. Mounting a filesystem changes the filesystem topology for all users on the system. Warning Ready to optimize your JavaScript with Rust? alrsprd3:root-/etc> more sudoers | grep fzcx0l You can put sudo in scripts. It seems like if the user has control over both sides of the mount equation everything should be cool. As for the proper syntax, I have this line in my sudoers: Code: %wheel ALL=NOPASSWD: /usr/bin/powertop It lets anyone in the wheel group run powertop as root with no password. Ultimately, I want to have this in a script. Get current directory or folder name (without the full path). The more I think of it, the more I feel it is likely this way. You would then want to make sure whatever user or group that would need to use the directory has access using the chown command (as in sudo chown -R :writers /data) and then give the group write access with the chmod command (as in sudo chmod -R g+w /data). Vaishey, Hello Folks, The company, which for several years has been on a buying spree for best-of-breed products, is integrating platforms to generate synergies for speed, insights and collaboration. As mentioned before, the recommended way of gaining super user privileges from the command line in macOS is the sudo command. This is even an issue even with desktop environments mounting removable filesystems by default largely swept under the rug with a "let's hope that doesn't happen" attitude. mount: only root can do that. But still, truecrypt isn't needing a sudo prefix so how can modifying sudoers affect the truecrypt script? sudo mount -o hard,nolock usa-node01:/mapr /mapr. Therefore, you would simply append the following to root's crontab. Requiring sudo-level access to get access to Docker is a sound security restriction. Your answer is confusing, are not the volumes themselves (e.g. By default, sudo will initialize the group vector to the list of groups the target user is in. iso with the path to your ISO file. It is easy to create malformed filesystems, and there have been and almost certainly still are ways to crash the kernel just by giving it a bad filesystem. You've heard about the bad hard drive issue, etc. @goldilocks: The reason this answer is bollocks is because your theory behind the restriction is very convincing, but it is totally wrong, the issue you referred to does not exist. Do non-Segwit nodes reject Segwit transactions with invalid signature? If not: What kind of mount does and what kind of mount doesn't require sudoIN GENERAL? Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. github.com/coldfix/udiskie/wiki/Permissions, wiki.archlinux.org/index.php/Udisks#Configuration. However, if you want, you can change this behavior. It looks like (a variation of) this has already been asked here before: Yes, you are correct, I was a little imprecise in my question. 2019 . Yes, truecrypt is calling sudo. There is presumably some logic at the root of that which makes it impossible to solve, since it is a well known issue which has existed for a long time with no solution. What can the administrator add to /etc/fstab to allow mounting an unspecified device to an unspecified location? To verify that you have sudo privileges, you can run the " sudo " command with the " -l " in order to list the privileges you currently own. I have an account in a lab where my home space is restricted to 8GB. SolveForum.com may not be responsible for the answers or solutions given to any question asked by the users. If you have a situation where this is not the case, it might be worth while asking: If the administration of the system is fair, then #2 explains why #1 is impossible for you. It doesn't always require super privs. Press question mark to learn the rest of the keyboard shortcuts. If there was we can expect some me2s to roll in. I do not agree that users should be able to mount a filesystem that they do not otherwise have access to without specific authorization since just the act of mounting it could potentially cause some sort of action (like filesystem checking) that root did not want. Why does Linux require that a user be root/using sudo/specifically authorized per mount in order to mount something? I am trying to write a script that would ssh into a host, perform mount operation there, run some other commands and exit. Filesystem mounted as root but owned by user. To use sudo to run a command as another user, we need to use the -u (user) option. Save and exit the file. Select Attach. Mounting to a non-owned location shadows the files at that location. 6. Can you offer any insight, like does the kernel treat block devices and regular files significantly differently? Looking for the best payroll software for your small business? To find out more details on this helpful tool, make sure to read the man page with man mount. This is to allow the root user to determine which drives are expected and safe to mount. How to mount an image file without root permission? Try to access root directory files using this command - sudo ls -la /root. He is asking how to avoid sudo at all. Thank u in advance. At what point in the prequels is it revealed that Palpatine is Darth Sidious? Connect to the instance through SSH or AWS Systems Manager Session Manager and run the command you copied in step 6: $ sudo mkdir -p /mnt/efs $ sudo mount -t efs -o tls fs-12345678:/ /mnt/efs $ sudo mount -t efs -o tls . The -l ( list) option will list out the allowed (and forbidden) commands for the invoking user on the current host. This is the Cmnd_Alias statement: Cmnd_Alias NFS_MOUNT /usr/sbin/mount -F nfs -o rw hpservername:/backups /backups This command works for me as ro. Imagine you made a script that called 'sudo umount'. This policy will help your organization safeguard its hardware, software and data from exposure to persons (internal or external) who could intentionally or inadvertently harm your business and/or damage physical assets. In the previous version of windows I didn't have the problem. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. If a user has direct write access to a block device, and can mount that block device, then they can write a suid executable to the block device, mount, it, and execute that file, and thus, gain root access to the system. They don't use fstab, as far as I know. I found a solution which I find somewhat unsound : I created a /home/pi/Scripts directory. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. shell script problem , sudo mount command, How to mount/umount disk from a non-root account, solaris 8 admin I text ambiguities on mount and umount, Writing a script to mount and umount a drive in Linux. 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